CVE-2025-13768
Access Control in Uniong Webitr ≤ 2_1_0_34
Raw vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XSummary
CVE-2025-13768 is a high-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Uniong Webitr. Its CVSS base score is 7.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-3 (Access Enforcement) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-13768 is an authentication bypass vulnerability in WebITR, a software product developed by Uniong. The flaw, classified under CWE-639 (Authorization Bypass Through User-Controlled Key), enables authenticated remote attackers to log into the system as any user by modifying a specific parameter. Attackers must first obtain a valid user ID to exploit this issue. The vulnerability has a CVSS v3.1 base score of 7.5 (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high potential impact on confidentiality, integrity, and availability.
The attack requires low-privilege authenticated access over the network, with high attack complexity due to the need to first acquire a target user ID. Once exploited, attackers can impersonate any user, potentially escalating privileges and performing unauthorized actions within the WebITR system, such as accessing sensitive data or modifying configurations.
TWCERT advisories detail the vulnerability and provide guidance on mitigation; refer to https://www.twcert.org.tw/en/cp-139-10539-21f45-2.html and https://www.twcert.org.tw/tw/cp-132-10538-6a26d-1.html for patches or workarounds. The CVE was published on 2025-11-28.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-199866
Vulnerability Data
WebITR developed by Uniong has an Authentication Bypass vulnerability, allowing authenticated remote attackers to log into the system as any user by modifying a specific parameter. Attackers must first obtain a user ID to exploit this vulnerability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforcing approved authorizations on every access request structurally stops a user-controlled key from reaching another user's data.
Requiring explicit access-control decisions on each request blocks unauthorized key-driven access.
Least-privilege restrictions limit the scope of data reachable even if a key check is bypassed.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Enforcing authorization policy and least privilege directly blocks user-controlled key tampering that bypasses access checks.
Logical access controls prevent unauthorized data access that results from missing authorization checks on object references.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect missing authorization checks but does not prevent the weakness in production.
Information access restriction explicitly enforces that users may only retrieve data they are authorized to see, directly addressing user-controlled key bypass.
Access control policy directly requires enforcement of authorization rules that prevent unauthorized access via manipulated keys.
Managing access rights includes ensuring users can only access their own records and not bypass authorization by altering identifiers.
Privileged access rights control restricts what data each user may access, mitigating direct object reference attacks.
Secure development lifecycle includes authorization design but does not itself implement runtime access checks.